| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_VIEWS_ACCESSIBILITY_AX_EVENT_MANAGER_H_ |
| #define UI_VIEWS_ACCESSIBILITY_AX_EVENT_MANAGER_H_ |
| |
| #include "base/macros.h" |
| #include "base/observer_list.h" |
| #include "ui/accessibility/ax_enums.mojom.h" |
| #include "ui/views/views_export.h" |
| |
| namespace views { |
| |
| class AXEventObserver; |
| class View; |
| |
| // AXEventManager allows observation of accessibility events for all views. |
| class VIEWS_EXPORT AXEventManager { |
| public: |
| AXEventManager(); |
| ~AXEventManager(); |
| |
| // Returns the singleton instance. |
| static AXEventManager* Get(); |
| |
| void AddObserver(AXEventObserver* observer); |
| void RemoveObserver(AXEventObserver* observer); |
| |
| // Notifies observers of an accessibility event. |view| must not be null. |
| void NotifyViewEvent(views::View* view, ax::mojom::Event event_type); |
| |
| private: |
| base::ObserverList<AXEventObserver> observers_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AXEventManager); |
| }; |
| |
| } // namespace views |
| |
| #endif // UI_VIEWS_ACCESSIBILITY_AX_EVENT_MANAGER_H_ |